[llvm-dev] enable optimization of integer multiplication and modulo using faster operations?

[Stephen Checkoway via llvm-dev]

> On Mar 5, 2019, at 23:34, Peng Yu via llvm-dev <llvm-dev at lists.llvm.org> wrote:
> 
> Is clang able to produce optimized code for integer multiplication and
> modulo operations? Thanks.

It certainly seems to, just not in IR as Craig mentioned. I put your function into compiler explorer and you can see it was compiled to a left shift by 5 and a subtraction, just as you'd expect <https://godbolt.org/z/f4gRId>.

-- 
Stephen Checkoway